code: def test_expand_heatmap(boxrgb, heatmap):
      expanded = expand_heatmap(heatmap, boxrgb, PIL.Image.BOX)
      assert (expanded.width, expanded.height) == (
          boxrgb.width,
          boxrgb.height,
      )
  
imports: import pytest
  import numpy
  from eli5.base import Explanation, TargetExplanation
  from eli5.formatters.image import format_as_image, heatmap_to_image, expand_heatmap, _validate_heatmap, _update_alpha, _cap_alpha, _overlay_heatmap
  from .utils_image import assert_pixel_by_pixel_equal
label_desc: Use image node_id 15 for calling a global function with example usage: test_expand_heatmap(boxrgb, heatmap) without return types